Computer cooling fan



FIG. 1 is a top, front and left side perspective view of a computer cooling fan showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a bottom plan view thereof. 

The ornametal design for a computer cooling fan, as shown and described. 